Elastic-fluid turbine.



UNITED STATES PATENT OEFI E.

WILLIAM L. R. EMMET,

or SCHENECTADY, NEW YORK, ASSIG-NO'R TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ELASTIC-FLUID TURBINE Specification of Letters Patent.

Patented July 23, 1907.

Application filed Decembe 22,1906. and No. 849.028.

To all whom 'it may concern:

Be it known that I, WILLIAM L. R. Enmn'r, a citizen of the Unitcd'States, residing at Schenectady, countfoi drive a common shaft that the thrust of the turbines or the pipe 1 to through the pipes 9 and 10 to a pipe 11 whichmaylead elements will either be wholly or to a large extent balanced. J,

In the drawing which shows one embodiment of my invention, steam from a suitable source is admitted by prise one, two or more stages of a compound turbine if desired, mounted on the shaft 3-. Theexhaust from this portion 0 .bine passes through the pipe 4 and then flows in parallel through the pipes 5 and 6 to the turbines or turbine sections .7 and 8, also mounted on the shaft 3 beyond the ends of the portion 2. The'exhaustfrom the portions or, elements 7 and 8 flows to a condenser or to the atmosphere.

- The turbine illusmzted is of the axial flow Parsons type. As is well known, steam or other elastic fluid,

. flowing through such-aturbine oausesa thrust on the shaft 3. In the present instance, however, steam is made to flow in'one direction through the element 2 and in they opposite direction through the elements 7 and 8 so that their thrust will be opposed to that of the ele-' ment 2. The elements may be so proportioned that I the thrust oi'puta 74nd s wm be balanced by that due to part 2.- li the tiu-isls are not wholly balanced, any

-"errcess in eithei direction may be taken care ofby a thrust bearingn at one end: ofthe shalt or other suitablelocation. Theunbalanced thrust, how-' ever, will be small fand'thethrust bearing operating under low preisure will cause'no gonble. prevents lnoveidbni of tho 'ehsft and the turbine wheels orbladss mounted thereon, thus serving to keep these wheefi or inpro'per slinement with the intermediate bladss or buckets. The other end of the shaft may be connected to drivgnny suitable load.

Obviously, thedirection of flow through the turbine might be the opposite of that described,' or the thrust bearing mightbepilcedattheotherendoitheshaitii desired.

the turbine element 2, which may com Patent oi the United States, is, l t

. bearing 10! the shall:

'21 dd! of December, 1906.

A stop valve control the flow of steam to thepipe 1 and the flow through the turbine elements may .be controlled by any customary regulating device.

Valves may also be located in the pipes 4, 5, 6, 9 and 10 to effect different combinations of the turbine elements or to provide for operating one or more of them when any of the others are disabled. i

"-In accordance with the provisions of the patent...

statutes, I have described the principle of operation of my invention together with the apparatus which now V consider to represent the best embodiment thereof; but 69 I desire to have it understood that the apparatus shown I is only illustrative, and that the invention canbeem'r. ried out by other means.

1. In combination, sshatt, a turbine element connected to drive the shaft and through which motive flyidflows in a given direction, a' plurality of otherturbine elelpents also connected to drive the-shalt, means whichreoeive'mo 1 What I claim as new and new b Letters;

tivefluld from the first element and delivers it to the other 70 elements in parallel to. flow in the, opposite dlrectlolij through them so that the thrusts of the first element the second elements tend to balance each other. ,i f 2. In combination, a shaft, :1 turblneeleme'nt'or sectipn mounted on the shalt, a conduit for supplying motive fluid I to flow in a'glven direction through the element, dplurak.

lty of other turbine elements also mounfedon the shaft.

means for receiving inotlvefluld mm the first element and for delivering it to the others impurallel-and causing it' to flow through then 1 hither-opposite direction? so that the 0 .thrusl ot the secondzelements' aml the .thrust ot'the first element tend to balance each other, aid means tor .convey- ,lng' sway the motive fluid exhausted tromthe'second ele mentaa l 3. Ii -combination, a shaft, 9. hlghpre'ssure turbine elementlmounted on the shaft, a conduit for supplying motive fluid to now throughthe turbine element in a given directlon, a plurality or low pressure turbine elementsa'lso mounted on shn'tt s. conduit which reeelvesm'otlve ithe :liighpres'sure' element and dl'tvare it to the low'pi'essure elements in parallel toflow throukh them lit opposite dlrectlonfso that the thrusts or the low p to elements and the thrust of the high" pressure elemenlrten'dto balance each other, and a thrustwhich maintains the turbine blades in properallnement and may receive the unbulanced'por- --tlon ot the thrust.

WILLIAM L. R. EMMET.

means;

Blnnmri B.-Honn, Hanna Oarosn. 

